<template>
  <vol-box
    :lazy="false"
    :model.sync="model"
    :title="isAdd ? '新建流程' : '编辑流程'"
    :height="height"
    :width="width"
    :padding="0"
  >
    <div v-if="easyFlowVisible" style="height: calc(100vh);">
      <el-row>
        <!--顶部工具菜单-->
        <el-col :span="24">
          <div class="ef-tooltar">
            <!-- <el-link type="primary" :underline="false">{{data.name}}</el-link> -->
            <el-form
              :model="data"
              ref="dataForm"
              label-width="100px"
              class="demo-ruleForm"
              size="mini"
            >
              <!-- <el-col :span="2">
                <el-form-item label="">
                  <el-link type="primary" :underline="false">{{
                    data.name
                  }}</el-link>
                </el-form-item>
              </el-col> -->
              <el-col :span="6">
                <el-form-item label="流程名称">
                  <el-input v-model="data.workName"></el-input>
                </el-form-item>
              </el-col>
              <el-col :span="6">
                <el-form-item label="工作流类型">
                  <!-- <el-input v-model="data.worktableName"></el-input> -->
                  <el-select
                    v-model="data.workType"
                    @change="getWorkTypeList"
                    placeholder="请选择"
                  >
                    <el-option
                      v-for="item in workTypeList"
                      :key="item.key"
                      :label="item.value"
                      :value="item.key"
                    >
                    </el-option>
                  </el-select>
                </el-form-item>
              </el-col>
              <el-col :span="6">
                <el-form-item label="名称">
                  <!-- <el-input v-model="data.worktableName"></el-input> -->
                  <el-select
                    v-model="data.bindingId"
                    placeholder="请选择"
                    @change="bindingName($event)"
                  >
                    <el-option
                      v-for="item in worktableNameList"
                      :key="item.id"
                      :label="item.name"
                      :value="item.id"
                    >
                    </el-option>
                  </el-select>
                </el-form-item>
              </el-col>
              <el-col :span="6">
                <el-form-item label="备注">
                  <el-input v-model="data.remark"></el-input>
                </el-form-item>
              </el-col>
            </el-form>
            <!-- <el-divider direction="vertical"></el-divider>
              <el-button type="text" icon="el-icon-delete" size="large" @click="deleteElement" :disabled="!this.activeElement.type"></el-button>
              <el-divider direction="vertical"></el-divider>
              <el-button type="text" icon="el-icon-download" size="large" @click="downloadData"></el-button>
              <el-divider direction="vertical"></el-divider>
              <el-button type="text" icon="el-icon-plus" size="large" @click="zoomAdd"></el-button>
              <el-divider direction="vertical"></el-divider>
              <el-button type="text" icon="el-icon-minus" size="large" @click="zoomSub"></el-button> -->
            <div style="float: right;margin-right: 5px">
              <!-- <el-button type="info" plain round icon="el-icon-document" @click="dataInfo" size="mini">流程信息</el-button> -->
              <!-- <el-button type="primary" plain round @click="dataReloadA" icon="el-icon-refresh" size="mini">切换流程A</el-button>
                  <el-button type="primary" plain round @click="dataReloadB" icon="el-icon-refresh" size="mini">切换流程B</el-button> -->
              <!-- <el-button type="primary" plain round @click="dataReloadC" icon="el-icon-refresh" size="mini">切换流程C</el-button>
                  <el-button type="primary" plain round @click="dataReloadD" icon="el-icon-refresh" size="mini">自定义样式</el-button>
                  <el-button type="primary" plain round @click="dataReloadE" icon="el-icon-refresh" size="mini">力导图</el-button> -->
              <!-- <el-button type="info" plain round icon="el-icon-document" @click="openHelp" size="mini">帮助</el-button> -->
            </div>
          </div>
        </el-col>
      </el-row>
      <div style="display: flex;height: calc(100% - 47px);">
        <div style="width: 230px;border-right: 1px solid #dce3e8;">
          <node-menu @addNode="addNode" ref="nodeMenu"></node-menu>
        </div>
        <div id="efContainer" ref="efContainer" class="container" v-flowDrag>
          <template v-for="node in data.nodeList">
            <flow-node
              :id="node.id"
              :key="node.id"
              :node="node"
              :activeElement="activeElement"
              @changeNodeSite="changeNodeSite"
              @nodeRightMenu="nodeRightMenu"
              @clickNode="clickNode"
            >
            </flow-node>
          </template>
          <!-- 给画布一个默认的宽度和高度 -->
          <div style="position:absolute;top: 2000px;left: 2000px;">&nbsp;</div>
        </div>
        <!-- 右侧表单 -->
        <div
          style="width: 300px;border-left: 1px solid #dce3e8;background-color: #FBFBFB"
        >
          <flow-node-form
            ref="nodeForm"
            @deleteElement="deleteElement"
            @delNode="deleteNode"
            @setLineLabel="setLineLabel"
            @repaintEverything="repaintEverything"
          ></flow-node-form>
        </div>
      </div>
      <!-- 流程数据详情 -->
      <!-- <flow-info v-if="flowInfoVisible" ref="flowInfo" :data="data"></flow-info>
  <flow-help v-if="flowHelpVisible" ref="flowHelp"></flow-help> -->
    </div>
    <div slot="footer">
      <Button type="primary" @click="saveAll()">保存</Button>
      <Button type="default" @click="() => (this.model = false)">关闭</Button>
    </div>
  </vol-box>
</template>

<script>
import VolBox from "@/components/basic/VolBox.vue";
import draggable from "vuedraggable";
// import { jsPlumb } from 'jsplumb'
// 使用修改后的jsplumb
// import "./jsplumb";
// import "@/assets/script/jsplumb.js";
import { easyFlowMixin } from "@/assets/script/mixins.js";
import flowNode from "./node";
import nodeMenu from "./node_menu";
// import FlowInfo from './info'
// import FlowHelp from './help'
import FlowNodeForm from "./node_form";
import lodash from "lodash";
//import { getDataA } from "./data_A";

export default {
  data() {
    return {
      worktableNameList: [],
      workTypeList: [],
      bindingobj: {},
      isAdd: false,
      model: false,
      // height:650,
      height: 500,
      width: 1200,
      // height:"80%",
      row: null,
      // jsPlumb 实例
      jsPlumb: null,
      // 控制画布销毁
      easyFlowVisible: true,
      // 控制流程数据显示与隐藏
      flowInfoVisible: false,
      // 是否加载完毕标志位
      loadEasyFlowFinish: false,
      flowHelpVisible: false,
      // 数据
      data: {},
      // 激活的元素、可能是节点、可能是连线
      activeElement: {
        // 可选值 node 、line
        type: undefined,
        // 节点ID
        nodeId: undefined,
        // 连线ID
        sourceId: undefined,
        targetId: undefined
      },
      zoom: 0.5
    };
  },
  // 一些基础配置移动该文件中
  mixins: [easyFlowMixin],
  components: {
    draggable,
    VolBox,
    nodeMenu,
    flowNode,
    FlowNodeForm
    //  flowNode, , FlowInfo, FlowNodeForm, FlowHelp
  },
  created() {
    this.screenSize();
  },
  directives: {
    flowDrag: {
      bind(el, binding, vnode, oldNode) {
        if (!binding) {
          return;
        }
        el.onmousedown = e => {
          if (e.button == 2) {
            // 右键不管
            return;
          }
          //  鼠标按下，计算当前原始距离可视区的高度
          let disX = e.clientX;
          let disY = e.clientY;
          el.style.cursor = "move";

          document.onmousemove = function(e) {
            // 移动时禁止默认事件
            e.preventDefault();
            const left = e.clientX - disX;
            disX = e.clientX;
            el.scrollLeft += -left;

            const top = e.clientY - disY;
            disY = e.clientY;
            el.scrollTop += -top;
          };

          document.onmouseup = function(e) {
            el.style.cursor = "auto";
            document.onmousemove = null;
            document.onmouseup = null;
          };
        };
      }
    }
  },
  watch:{
    height(){  this.screenSize();},
    width(){ this.screenSize();}

  },
  mounted() {
    window.onresize = () => {
      return (() => {
        this.screenSize();
      })();
    };
    this.jsPlumb = jsPlumb.getInstance();
    this.$nextTick(() => {
      // 默认加载流程A的数据、在这里可以根据具体的业务返回符合流程数据格式的数据即可
      // this.dataReload(getDataB())
      this.dataReload(this.data);
    });
  },
  methods: {
    // 打开新建或者编辑弹窗
    async open(row) {
      this.row = row;
      console.log("打开新建或者编辑弹窗", this.row);
      this.model = true;
      this.isAdd = Object.keys(this.row).length == 0;
      // this.getMallContract();
      this.workTypeSelect();
      this.data.nodeList = [];
      this.data.lineList = [];
      this.easyFlowVisible = false;
      if (this.isAdd) {
        this.easyFlowVisible = true;
        // this.data.workName =''
        // this.data.bindingId=''
        // this.data. remark=''
      } else {
        console.log("biianji", this.row);
        this.$nextTick(() => {
          this.data.workName = this.row.workName;
          this.data.remark = this.row.remark;
          this.data.workType = Number(this.row.workType);
          this.getWorkTypeList(this.data.workType);
          this.data.bindingId = this.row.bindingId;
          this.data.nodeList = JSON.parse(this.row.nodeList);
          this.data.lineList = JSON.parse(this.row.lineList);
          this.easyFlowVisible = true;
          this.data = lodash.cloneDeep(this.data);
          this.$nextTick(() => {
            this.jsPlumb = jsPlumb.getInstance();
            this.$nextTick(() => {
              this.jsPlumbInit();
            });
          });
        });
        // this.dataReload(this.data)
        //
      }
    },
    // 获取类型下拉
    workTypeSelect() {
      this.http
        .post("/api/Dictionary/GetVueDictionary", ["Approval_process_type"])
        .then(res => {
          this.workTypeList = [];
          res.forEach(o => {
            if (o.dicNo == "Approval_process_type") {
              o.data.forEach(i => {
                let obj = {
                  value: i.value,
                  key: i.key
                };
                this.workTypeList.push(obj);
              });
            }
          });
        });
    },
    // 获取下拉框名字
    bindingName(id) {
      this.bindingobj = this.worktableNameList.find(item => item.id == id);
      this.data.bindingName = this.bindingobj.name;
    },
    // 审批流类型查询
    getWorkTypeList(val) {
      this.http.get("/api/Mall_work/GetIdName", { id: val }).then(res => {
        this.worktableNameList = res.data;
      });
    },
    //切换屏幕时监听屏幕的大小
    screenSize() {
      this.height = document.body.clientHeight - 140;
      let width = document.body.clientWidth * 0.9;
      this.width = width > 1800 ? 1800 : width;
    },
    //合同查询
    // getMallContract() {
    //   let params = {
    //     order: "asc",
    //     page: 1,
    //     rows: 100,
    //     sort: "beginDate",
    //     wheres: `[{\"name\":\"auditStatus\",\"value\":\"0\",\"displayType\":\"text\"}]`
    //   };
    //   this.http.post("/api/Mall_contract/getPageData", params).then(res => {
    //     this.worktableNameList = res.rows;
    //   });
    // },
    // 返回唯一标识
    getUUID() {
      return Math.random()
        .toString(36)
        .substr(3, 10);
    },
    jsPlumbInit() {
      this.jsPlumb.ready(() => {
        // 导入默认配置
        this.jsPlumb.importDefaults(this.jsplumbSetting);
        // 会使整个jsPlumb立即重绘。
        this.jsPlumb.setSuspendDrawing(false, true);
        // 初始化节点
        this.loadEasyFlow();
        // 单点击了连接线, https://www.cnblogs.com/ysx215/p/7615677.html
        this.jsPlumb.bind("click", (conn, originalEvent) => {
          this.activeElement.type = "line";
          this.activeElement.sourceId = conn.sourceId;
          this.activeElement.targetId = conn.targetId;
          this.$refs.nodeForm.lineInit({
            from: conn.sourceId,
            to: conn.targetId,
            label: conn.getLabel()
          });
        });
        // 连线
        this.jsPlumb.bind("connection", evt => {
          let from = evt.source.id;
          let to = evt.target.id;
          if (this.loadEasyFlowFinish) {
            this.data.lineList.push({ from: from, to: to });
          }
        });

        // 删除连线回调
        this.jsPlumb.bind("connectionDetached", evt => {
          this.deleteLine(evt.sourceId, evt.targetId);
        });

        // 改变线的连接节点
        this.jsPlumb.bind("connectionMoved", evt => {
          this.changeLine(evt.originalSourceId, evt.originalTargetId);
        });

        // 连线右击
        this.jsPlumb.bind("contextmenu", evt => {
          console.log("contextmenu", evt);
        });

        // 连线
        this.jsPlumb.bind("beforeDrop", evt => {
          let from = evt.sourceId;
          let to = evt.targetId;
          if (from === to) {
            this.$message.error("节点不支持连接自己");
            return false;
          }
          if (this.hasLine(from, to)) {
            this.$message.error("该关系已存在,不允许重复创建");
            return false;
          }
          if (this.hashOppositeLine(from, to)) {
            this.$message.error("不支持两个节点之间连线回环");
            return false;
          }
          this.$message.success("连接成功");
          return true;
        });

        // beforeDetach
        this.jsPlumb.bind("beforeDetach", evt => {
          console.log("beforeDetach", evt);
        });
        this.jsPlumb.setContainer(this.$refs.efContainer);
      });
    },
    // 加载流程图
    loadEasyFlow() {
      // 初始化节点
      for (var i = 0; i < this.data.nodeList.length; i++) {
        let node = this.data.nodeList[i];
        // 设置源点，可以拖出线连接其他节点
        this.jsPlumb.makeSource(
          node.id,
          lodash.merge(this.jsplumbSourceOptions, {})
        );
        // // 设置目标点，其他源点拖出的线可以连接该节点
        this.jsPlumb.makeTarget(node.id, this.jsplumbTargetOptions);
        if (!node.viewOnly) {
          this.jsPlumb.draggable(node.id, {
            containment: "parent",
            stop: function(el) {
              // 拖拽节点结束后的对调
              console.log("拖拽结束: ", el);
            }
          });
        }
      }
      // 初始化连线
      for (var i = 0; i < this.data.lineList.length; i++) {
        let line = this.data.lineList[i];
        var connParam = {
          source: line.from,
          target: line.to,
          label: line.label ? line.label : "",
          connector: line.connector ? line.connector : "",
          anchors: line.anchors ? line.anchors : undefined,
          paintStyle: line.paintStyle ? line.paintStyle : undefined
        };
        this.jsPlumb.connect(connParam, this.jsplumbConnectOptions);
      }
      this.$nextTick(function() {
        this.loadEasyFlowFinish = true;
      });
    },
    // 设置连线条件
    setLineLabel(from, to, label) {
      var conn = this.jsPlumb.getConnections({
        source: from,
        target: to
      })[0];
      if (!label || label === "") {
        conn.removeClass("flowLabel");
        conn.addClass("emptyFlowLabel");
      } else {
        conn.addClass("flowLabel");
      }
      conn.setLabel({
        label: label
      });
      this.data.lineList.forEach(function(line) {
        if (line.from == from && line.to == to) {
          line.label = label;
        }
      });
    },
    // 删除激活的元素
    deleteElement() {
      if (this.activeElement.type === "node") {
        this.deleteNode(this.activeElement.nodeId);
      } else if (this.activeElement.type === "line") {
        this.$confirm("确定删除所点击的线吗?", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        })
          .then(() => {
            var conn = this.jsPlumb.getConnections({
              source: this.activeElement.sourceId,
              target: this.activeElement.targetId
            })[0];
            this.jsPlumb.deleteConnection(conn);
          })
          .catch(() => {});
      }
    },
    // 删除线
    deleteLine(from, to) {
      this.data.lineList = this.data.lineList.filter(function(line) {
        if (line.from == from && line.to == to) {
          return false;
        }
        return true;
      });
    },
    // 改变连线
    changeLine(oldFrom, oldTo) {
      this.deleteLine(oldFrom, oldTo);
    },
    // 改变节点的位置
    changeNodeSite(data) {
      for (var i = 0; i < this.data.nodeList.length; i++) {
        let node = this.data.nodeList[i];
        if (node.id === data.nodeId) {
          node.left = data.left;
          node.top = data.top;
        }
      }
    },
    /**
     * 拖拽结束后添加新的节点
     * @param evt
     * @param nodeMenu 被添加的节点对象
     * @param mousePosition 鼠标拖拽结束的坐标
     */
    addNode(evt, nodeMenu, mousePosition) {
      var screenX = evt.originalEvent.clientX,
        screenY = evt.originalEvent.clientY;
      let efContainer = this.$refs.efContainer;
      var containerRect = efContainer.getBoundingClientRect();
      var left = screenX,
        top = screenY;
      // 计算是否拖入到容器中
      if (
        left < containerRect.x ||
        left > containerRect.width + containerRect.x ||
        top < containerRect.y ||
        containerRect.y > containerRect.y + containerRect.height
      ) {
        this.$message.error("请把节点拖入到画布中");
        return;
      }
      left = left - containerRect.x + efContainer.scrollLeft;
      top = top - containerRect.y + efContainer.scrollTop;
      // 居中
      left -= 85;
      top -= 16;
      var nodeId = this.getUUID();
      // 动态生成名字
      var origName = nodeMenu.name;
      var nodeName = origName;
      var index = 1;
      while (index < 10000) {
        var repeat = false;
        for (var i = 0; i < this.data.nodeList.length; i++) {
          let node = this.data.nodeList[i];
          if (node.name === nodeName) {
            nodeName = origName + index;
            repeat = true;
          }
        }
        if (repeat) {
          index++;
          continue;
        }
        break;
      }
      var node = {
        id: nodeId,
        name: nodeName,
        type: nodeMenu.type,
        left: left + "px",
        top: top + "px",
        ico: nodeMenu.ico,
        state: "1",
        rolesName: "",
        roles: "",
        remarks: "",
        AuditTime: "待审批",
        isAud: 0
      };
      /**
       * 这里可以进行业务判断、是否能够添加该节点
       */
      this.data.nodeList.push(node);
      this.$nextTick(function() {
        this.jsPlumb.makeSource(nodeId, this.jsplumbSourceOptions);
        this.jsPlumb.makeTarget(nodeId, this.jsplumbTargetOptions);
        this.jsPlumb.draggable(nodeId, {
          containment: "parent",
          stop: function(el) {
            // 拖拽节点结束后的对调
            console.log("拖拽结束: ", el);
          }
        });
      });
    },
    /**
     * 删除节点
     * @param nodeId 被删除节点的ID
     */
    deleteNode(nodeId) {
      this.$confirm("确定要删除节点" + nodeId + "?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
        closeOnClickModal: false
      })
        .then(() => {
          /**
           * 这里需要进行业务判断，是否可以删除
           */
          this.data.nodeList = this.data.nodeList.filter(function(node) {
            if (node.id === nodeId) {
              // 伪删除，将节点隐藏，否则会导致位置错位
              // node.show = false
              return false;
            }
            return true;
          });
          this.$nextTick(function() {
            this.jsPlumb.removeAllEndpoints(nodeId);
          });
        })
        .catch(() => {});
      return true;
    },
    clickNode(nodeId) {
      this.activeElement.type = "node";
      this.activeElement.nodeId = nodeId;
      this.$refs.nodeForm.nodeInit(this.data, nodeId);
      console.log(nodeId, this.data, "nodeId");
    },
    // 是否具有该线
    hasLine(from, to) {
      for (var i = 0; i < this.data.lineList.length; i++) {
        var line = this.data.lineList[i];
        if (line.from === from && line.to === to) {
          return true;
        }
      }
      return false;
    },
    // 是否含有相反的线
    hashOppositeLine(from, to) {
      return this.hasLine(to, from);
    },
    nodeRightMenu(nodeId, evt) {
      this.menu.show = true;
      this.menu.curNodeId = nodeId;
      this.menu.left = evt.x + "px";
      this.menu.top = evt.y + "px";
    },
    repaintEverything() {
      this.jsPlumb.repaint();
    },
    // 流程数据信息
    dataInfo() {
      this.flowInfoVisible = true;
      this.$nextTick(function() {
        // this.$refs.flowInfo.init()
      });
    },
    // 加载流程图
    dataReload(data) {
      this.easyFlowVisible = false;
      this.data.nodeList = [];
      this.data.lineList = [];
      this.$nextTick(() => {
        data = lodash.cloneDeep(data);
        this.easyFlowVisible = true;
        this.data = data;
        // console.log(this.data, "流线open22");
        this.$nextTick(() => {
          this.jsPlumb = jsPlumb.getInstance();
          this.$nextTick(() => {
            this.jsPlumbInit();
          });
        });
      });
    },
    // 模拟载入数据dataA
    // dataReloadA() {
    //     this.dataReload(getDataA())
    // },
    // 模拟载入数据dataB
    // dataReloadB() {
    //     this.dataReload(getDataB())
    // },
    // // 模拟载入数据dataC
    // dataReloadC() {
    //     this.dataReload(getDataC())
    // },
    // // 模拟载入数据dataD
    // dataReloadD() {
    //     this.dataReload(getDataD())
    // },
    // 模拟加载数据dataE，自适应创建坐标
    // dataReloadE() {
    //     let dataE = getDataE()
    //     let tempData = lodash.cloneDeep(dataE)
    //     let data = ForceDirected(tempData)
    //     this.dataReload(data)
    //     this.$message({
    //         message: '力导图每次产生的布局是不一样的',
    //         type: 'warning'
    //     });
    // },
    zoomAdd() {
      if (this.zoom >= 1) {
        return;
      }
      this.zoom = this.zoom + 0.1;
      this.$refs.efContainer.style.transform = `scale(${this.zoom})`;
      this.jsPlumb.setZoom(this.zoom);
    },
    zoomSub() {
      if (this.zoom <= 0) {
        return;
      }
      this.zoom = this.zoom - 0.1;
      this.$refs.efContainer.style.transform = `scale(${this.zoom})`;
      this.jsPlumb.setZoom(this.zoom);
    },
    // 下载数据
    downloadData() {
      this.$confirm("确定要下载该流程数据吗？", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
        closeOnClickModal: false
      })
        .then(() => {
          var datastr =
            "data:text/json;charset=utf-8," +
            encodeURIComponent(JSON.stringify(this.data, null, "\t"));
          var downloadAnchorNode = document.createElement("a");
          downloadAnchorNode.setAttribute("href", datastr);
          downloadAnchorNode.setAttribute("download", "data.json");
          downloadAnchorNode.click();
          downloadAnchorNode.remove();
          this.$message.success("正在下载中,请稍后...");
        })
        .catch(() => {});
    },
    openHelp() {
      this.flowHelpVisible = true;
      this.$nextTick(function() {
        this.$refs.flowHelp.init();
      });
    },
    // 保存全部数据
    saveAll() {
      if (this.isAdd) {
        let params = {
          mainData: this.data
        };
        this.http.post("/api/Mall_work/add", params).then(res => {
          console.log(res, "add---");
          if (res.status) {
            this.$Message.success("保存成功");
            this.$store.getters.data().viewPageTest.refresh();
            this.$nextTick(() => {
              this.model = false;
            });
          } else {
            this.$Message.error(res.message);
          }
        });
      } else {
        this.data.id = this.row.id;
        this.data.characteristic = "0";
        this.data.worktableName = "0";
        let params = {
          mainData: this.data
        };
        this.http.post("/api/Mall_work/update", params).then(res => {
          if (res.status) {
            this.$Message.success("修改成功");
            this.$store.getters.data().viewPageTest.refresh();
            this.$nextTick(() => {
              this.model = false;
            });
          } else {
            this.$Message.error(res.message);
          }
        });
      }
    }
  }
};
</script>
